#!/usr/bin/env node
const pi=Math.PI;
class Circle{
    constructor(radius){
        this.#r=radius;
    }

    get diameter(){
        return 2 * this.#r;
    }

    get circumference(){
        return pi *2 *this.#r;
    }

    get area(){
        return pi * this.#r *this.#r
    }

    #r=0;
}

export default Circle;

